Type-writing machine.



W. J. NEIDIG.

TYPE WRITING MACHINE.

APPLlCATlON mu) mu: 30. 1916.

1,21 8,888. Patented Mar. 13, 1917.

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WILLIAM J. NEIDIG, OF CHICAGO, ILLINOIS.

TYPE-WRITING MACHINE.

1,21s,css. v

Specification of Letters Patent.

Patented Mar. 13, 1917.

Application filed June 30, 1916. Serial No. 106,919.

To all whom it may concern:

Be it known that 1, WILLIAM J. NEIDIG, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Type-l/vriting Machines, of which the followii'lg is a specification.

The objects of my invention are to supply the operator of a type-writing machine with a means for throwing sheet-position indicating devices into disuse irrespective of their operative position, and to supply him with a quick and convenient means for retracting the paper-feeling element in sheetcontrolled indicating devices from the paper path, or from contact with the sheet, or from any other non-retracted position, either or both.

I attain my several objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is an end view of one embodiment of my invention, with parts of the typewriter carriage frame broken away; Fig. 2 is an end view of another embodiment of my invention, "with parts of the typewriter carriage and index rim broken away; and Fig. 3 is a cross-section of Fig. 2 on the line 33.

Similar symbols of reference refer to similar parts in the several drawings.

The usual carriage frame is indicated at 1, the platen at 2 (Fig. 2), the platen arbor at 3, the platen head at 4, the paper table at 5. Other typewriter parts, not necessary to be shown herein, are or may be as 111 practice.

The embodiment of my invention shown in Fig. 1 is described as follows: Attached upon the typewriter is a sheet-controlled indicator for indicating the position and approach of the end of the sheet, such for instance as is shown and described in various embodiments in my United States Patents Nos. 1,053,919 to 1,053,928 inclusive. A convenient form for present illustrative purposes consists of the index rim 7, lightly pressed against the end of the platen by the pressure of collar 8 upon disk spring 9 seated upon inside shoulder 10 of the lndex rim. Rim 7 is supplied with a downstanding portion 11, inside of which the platen head is loosely jouinaled. Collar 8 is held in lateral position upon the hub portion of the platen head by a set-screw. Carnage frame 1 bears the inwardly projecting pin 12 upon which is journaled the light arm 13 having an inwardly extending portion 14 that constitutes a paper-feeler. This in wardly extending paper-feeler has. a path through slot 15 in paper table 5. Journaled upon pin 16 on arm 13 is a trip lever 17; the construction is such as to permit the trip lever to bend idly upon the said pin in one direction but not in the other, so as to permit free backing-up of the index rim. A. light coiled spring 1.8 on the hub 19 of arm 13 bears at one end upon pin 20 on frame 1 and at the other upon an outwardly extending .portion of pin 16, and tends to hold paper-feeler 145 out of slot 15 and against the platen in retracted position, with trip-lever 17 lying in the path of projection 21 on rim 7. A pointer 22 to cooperate with the indices and markings on index rim 7 is attached upon the carriage frame under screw 23.

In operation the sheet is inserted in usual manner down the'paper table and advanced by turning the platen-roll. This action revo ves index-rim 7, bringing projection 21 into engagement with trip-lever 17. Further revolution of the platen causes trip-lever 17 to bring paper-feeler 14 down upon the sheet, where it is detained by the sheet, and through it rim 7 until the end of the sheet passes from over slot 15. When this occurs feeler 14, no longer detained by the sheet, passes into the slot, and index rim 7, frictionally driven, takes up movement with the platen bringing its indices, or other incheating means as shown and described in said patents, into operative action.

My present invention consists of a means for throwing indicating devices such as the one just described into disuse in any position of the mechanism, and also of a means for conveniently retracting the paper-feeler (in cases where the indicator makes use of such an element) from a non-retracted position so as to facilitate handling the sheet. Journaled upon carriage frame 1 by means of inwardly projecting pin 24: is throw-olf lever 25, manually actuated by an upwardly extending portion 26. Lever 25 has an inwardly extending portion 27, which engages with a downwardly extending portion 28 of arm 13 when actuated downwardly while said arm 13 is in non-retracted position. A stop 29 on said portion 28 conveniently limits the movement of said throw-off lever in of carriage frame tion 27 lying out of the path of portion 28 of said arm 13 previously described.

in operation thedevice works as follows: tluppose the operator has entered the sheet and paper-fceler 1-1 has been moved down into contact therewith and the operator changes his mind and decides to throw the indicating mechanism into disuse, or desires to readjust his sheet on the paper table and wishes to retract the paper-feeler for the moment. He merely throws lever 26 toward the plate arbor, thereby through parts 27 and 28 raising paper-fceler 11- into retracted position against the platen, and the same movement serves to lock the arm 13 against further operative movement, and through it and trip-lever 17 and projection 21 to detain index rim 7 in stationary position and disuse. ind if the operator then or later wishes to resume the use of the indicating mechanism, all he has to do is to throw lever 26 away from the platen-arbor and the indicating mechanism is at once free to opcrate.

The indicating mechanism shown in'Figs. 2 and 3 is described as follows: Carriage frame 1 has an upwardly extending portion 1 upon which is attached the inwardly projecting pin or stud 12 Journaled upon this pin is the light sheet-metal part 13 consisting of a laterally extending connect ing portion (indicated at 13 and two end portions. The outerend portion bears pin 16?, upon which is journaled trip-lever 17, extending into the path of projection 21. A paper-feeler 1 1 extends downwardly from portio 13 paper table 5. Stud 12 bears a projection 20 (Fig. 3), against which presses one end of a light coiled spring 18 the other end of which bears against part 13 in such manner as to tend to hold paper feeler 1 1 retracted against the platen. Projection 21 engages upon trip-lever 17 and through it moves paper-feeler 1 1 into its slot in the paper table, just as in the case of trip-lever 17 and feeler lei of Fig. 1, and the resultant action upon rim 7 is the same and the indicating action is the same.

The throw-off and retracting device is described as follows: Pin or stud 12 is seated against a shouldered collar 2 1 3), upon which is journaled a lever 25 having an inwardly extending portion 27 adapted and has a path into a slot in to engage with an upwardly extending portion 28 of part 13 This lever 25 is supplied with an inwardly projecting pin 3%, and frame extension 1- with another pin '35, between which a spring 31 acts expandingly. Two stops or lugs 29 on lever 25 conveniently cooperate with pin 35 to limit the movements of lever 25 aforesaid. The device is shown in the illustrations as in locked position, with the indicating mechanism locked in disuse.

its action is as follows: If the operator desires to use the indicating mechanism he presses the thumb portion 30 of lever 25 toward the platen arbor, thereby compressing spring 31 between pins 3%: and 35until pin 31 passes over the center, after which spring 31 throws lever 25 still farther until the forward lug 29 rests against pin 35. Portion 27 is now beyond the path taken by portion 28 when the paper-feeler is thrown into its slot by projection 21 and the indicator is left free to operate the operator thereafter desires to retract the feeler, or to throw the indicating mechanism into disuse, or both, he will press thumb portion 30 away "rom the platen arbor, thereby bring part 27 against part 28 and so retract the feeler, after which the spring 31 will hold the parts thus, being stronger than the light pressure exerted by the frictionally driven rim 7 through trip-lever 17 and projection 21, whereupon rim 7 will thereafter he held in stationary position, in dis use.

I expect that embodiments of my invention based on that shown in Figs. 2 and 3 will be more widely used in practice, and where it can be adapted that is the form I prefer.

it will be understood that the action of both parts 27 and 27 as described herein is ultimately an action detaining the platenactuated rim 7 and thereby preventing it from performing its usual functions in the indicating mechanism, and that either part can be moved into detaining position in any position of rim 7, and that rim 7 is not necessarily detained in the position in which it stands when either part 27 or part 27 is thus moved into detaining position but may have an additional forward movement thereafter or may be pushed backwardly thereby, and that the detaining action of the said parts 27 and 27 is communicated through trip-levers 17 or 17 and projection 21 as a mere matter of convenience. It will also be understood that parts 27 and 27 perform the additional function of retracting paper-feelers 14 and 14- from their slots or other non-retracted positions, although in the indicating mechanisms shown in the figures the springs 18 and 18 act to retract the feelers upon the passing or withdrawal of projection 21, said springs not being used in all types of indicators. It Will also be understood that although my invention Will preferably be used With-the types of indicators referred to herein, I do not regard it as necessarily limited to such use.

I claim as my invention:

1. In a typewriting machine, in combination, a platen for advancing the sheet, a paper-feeler, indicating means under the control of said feeler, and a retractor adapted to move the paper-feeler out of the paper path, said retractor operated manually.

2. In a typewriting machine, in combination, a platen, a paper feeler, indicating means under the control of said feeler, a retractor for said feeler adapted to be operated manually, and means for maintaining said feeler in retracted position.

3. In a typeWriting machine, in combination, a. platen, a paper-feeler, indicating means under the control of said feeler, a retractor for said feeler, and a spring for holding said retractor in retracting position.

4. In a typeWriting machine, in combination, a platen, indicating means including a detainable member actuated from said platen, and a detent adapted to detain said member in disuse and manually operable in every position of said indicating means.

5. In a typewriting machine, in combination, a platen, indicating means actuated from said platen, a throw-0E adapted to throw said indicating means into disuse, and a spring for controlling the position of said throw-oil".

6. In a typewriting machine, in combination, a platen, an index rim yieldingly actuated from said platen, a detent adapted to detain said index rim in disuse, and a spring adapted to hold said detent in detaining position, said detent manually operated.

7 In a typewriting machine, in combination, a platen, an index rim frictionally Copies of this patent may be obtained for five cents each, by addressing the Commissioner &

driven from the platen, a manually operable detent for said index rim, a spring for bold ing said detent in detaining position, and stopping means for limitng the movement of said detent.

8. In a typewriting machine, in combination, a platen, a paper-feeler, an index rim detainably driven from the platen and con nected to press said paper-feeler into the paper path, and a manually operable detent connected to actuate said rim backwardly until said paper-feeler lies in retracted position out of the paper path.

9. In a typeWriting machine, in combination, a platen, a paper-feeler, an index rim detainably actuated from the platen under the control of said feeler, and a throw-off device adapted to retract and hold said paperfeeler from the paper path and to detain said index rim in disuse.

10. In a typeWriting machine, in combination, a platen, a paper-feeler, an index carrier actuated from the platen under the control of said feeler, a throw-off device adapted to retract said feeler from the paper path and hold said index carrier in disuse, and a spring for maintaining said device in operative position.

11. In a typewriting machine, in combination, a platen, a paper-feeler, an index rim frictionally driven from the platen and having a projection thereon, a trip-lever in the path of said projection and operative upon said paper-feeler, a throw-01f device operable to cause said trip-lever to bear back- Wardly against said projection and also connected to hold said paper-feeler out of the paper path, and a spring for holding said throw-off device in detaining position against the pressure of said index rim.

WILLIAM J. NEIDIG.

Witnesses IIAISER M. BESHSI-IURE, SAMUEL SILVERMAN.

of Patents,

Washington, I). G. 

